Calendar rack



Oct. 22, 1935. R. J. HIGGlNBoTHAM Er AL 2,018,063

CALENDAR RACK Filed March 31, 1955 gri/umm @www Patented Oct. 22, 1935 UNITED STATES PATENT OFFICE CALENDAR RACK Application March 31,

9 Claims.

'I'his invention relates to an improved calendar rack which has many features not heretofore present in calendar racks.

Some of the improvements and results obtained by the improved calendar rack are: the number of split laps is reduced to a minimum; soft and iluffy laps are prevented; waste is reduced by the production of a iirm and even lap;4

the breakage of pinions, lap rolls, necks and the like is eliminated; free and easy turning of lap pin and rollers is assured; requires the addition of lubricant only at long separated periods; oily and greasy laps are eliminated; labor is saved and production is increased; the calendar rack head will follow worn or irregular lap pin necks; pressure on lap pin neck is released when friction mechanism binds, or gears become clogged; the pressure applying means is moved vertically upward a short distance when a shearing pin is broken and not in the arc of a circle as heretofore has been the case in other structures and thus breakage of laps prevented as the lap pin is still held in position and continues to receive the lap until the machine can be stopped to remedy the fault.

It is a well-known fact that in textile mills the stock is run through picking machinery to cleans the stock and to produce a lap of uniform thickness. The lap emerging from the 3Q picker is very iluify and in order to produce a compact lap or roll, the lap yis wound onto a lap pin. The lap pin is pressed against the lap by calendar racks engaging the lap pin at both ends, which calendar racks are geared to a common shaft, the turning of which is retarded by a friction drum, weight and lever. Sometimes the train of gears between the calendar racks and the friction drum becomes choked or excessive friction is applied to the drum and in either instance the pressure applied by the lap pin on the calendar racks becomes too great and results in breakage of the calendar racks or other parts of the machine. In the improved calendar rack hereinafter explained more fully this breakage is prevented by the provision of shearing means associated with pressure applying means on the calendar rack, with the pressure applying means being so arranged ,as to allow the lap pin to move freely upward a short distance when the shearing occurs.

1933, Serial No. 663,752

Some of the objects of the invention having been stated, the details of the invention will appear more fully in the description hereinafter following, when taken in connection with the accompanying drawing, in which- Figure 1 is a side elevation of the improved calendar rack with the lower central portion thereof broken away; v

Figure 2 is an elevation, looking at the right hand side of Figure 1;

Figure 3 is a transverse sectional view, taken along the line 3-3 in Figure 1;

Figure 4 is an isometric view, partly in section, of one of the rollers'in the calendar rack;

Figure 5 is an enlarged ldetail of the lubricantl5 retaining feature as seen in the upper left hand l portion of Figure 4.

Referring more specifically to the drawing, the numeral IIJ designates an upright rack having teeth II on the lower portion thereof, a portion of the lower half being broken away. The teeth II are for engagement with the usual gears or pinions. A head I2 is loosely mounted on the rack for vertical sliding movement when undue pressure is applied upwardly on the head by the lap pin. The rack has opposed grooves I3 and I4 in lwhichl pins I5 and I6 loosely slide, these pins I5 and I6 being secured in the side portions I'I and I8 of hea-d I2 in any suitable manner, such as by being threadably mounted therein. The side portions II and I8 of head member I2 are joined together by web portion I 9.

There is a goodly amount of clearance between the side portions I1 and I8 and the rack I!) in order that a certain amount of swivel action may be permitted in head I2 so as to allow the head to rock or swivel on the hemispherical head of pin 20, and also to allow the .rollers to remain in parallel contact with the lap pin when either of. the shearing pins breaks. 4o The upper surface of web portion I9 hastherein a suitable cavity in which the rounded lower end of pin 20 may have lodgment, said pin 20 being vertically disposed and slidably penetrating a suitable hole in the rack bar I0 and to per- 45 mit the rollers in the head to remain in parallel contact with the lap pin when either head moves upward due to breakage of a shearing pin. A suitable shearing pin 2l penetrates the rack bar III and the pin 20, this pin being adapted to shear whenV undue upward pressure is exerted n on the head I2 by the lap pin, the end bearing Y of which is designated by reference character 22.

Y vfurther downward on the rack bar when the lap pin is removed.

TheV side portions I1 and I8 of head I2 are penetrated by pins 21 and 26,'each ofthe pins 26 and Z1-having a iiattened .portion .28 which is adapted zto be engaged jvby a aset .screw i29 `or 30 threadably mounted in side portion I1 to prevent said pins from rotating. Each of the pins 26 and 21 and the rollers associated therewith are identical except as to thesize of the rollers thereon and a description of the .structure shown in Figures 4 and 5 will suillce for bQthIollersand the structure associated therewith. f

Each of the pins 26 and 21 has a passageway n 30a. having in the outer end 'thereof a vgrease` nipple 3| and the inner end 2of `the passageway communicated` with the exterior of the' pinwinA` termediatethe endsthereof whereby a lubricant yunder pressureY can be applied to the interior oi lthefroller jmounted on thejpin The y-rciller on .pin 26 is "designatedfby *32, while the roller on pin A21 is designatedgby '33. VAs the Vtwo'rollers .are identical in structure, adescrlptionof'zrdller .33 and associated parts as shown in (Figures '4 and 5 willsuice. Y

Suitable rings and 36 fare fixedly secured in a centrally 'disposed ibore extending VYlrongitudinally of. the roller and the ends ci j'rollers 31 'are rotatablymounted-infthese rings. The outer ends of the rollers 32 -and33fhave 1a larger kbore than that in-which the rollers 31 are `mounted. `Alubricantretaining'structurefis mounted in Yeachv oid-suchA larger bores in the 'outerends of 'the rollers 32 and I"33. This-lubricant -retain- Ving structure is, iirst assembled and then vinserted inthe Vends of the 1rollers such =as 33 and secured 4therein Eby vany suitable means fsuch as the end 4:Jij the roller. Y V.structure comprises -a circular v'tmp-shaped mem- 'by pressing 'the llubricant retaining assembly Vinto The'lubricant retaining ber 4e finto 'which inserted the 'washer L41 `made of any suitable flexible material 'such as leather, then ring 42 iis inserted on 'top `oi.' washerY 4I and jthen an Vendlesstension spring '43 is passed. over the smaller end of jthe washer 4I to press it :against pin 121 when fthe pin is inserted therein. Then washer s44 'lis `placed in `positionvvith the smaller `portion Lof :the Washer 4I penetrating the centrally disposed hole in washer te.. Then the rim of cup-:shaped .mem-

lber "`4'(l.is crimped Vor rolled to secure the .parts in assembled position after 'which one of these Vlubricant retaining structures is .placed in :each end of the rollers :32 Vand `Y33 by any suitable Vvmeansnr method as above described. "Then the 'Ampin 26 or 21 is inserted through fthe ro'ller 32 or 33 vbynieans of a suitable pilot (not shown) which spreads :the washerfliI most distant from theend of the 4roll 32 -or 313 zinto `which the pin V.is iirst inserted.

Suitable ring vWashers V545 are placed between the oil retainingassembly and-the roller 'bearing `to `protect the washers v54I and .'44 .from wear by only and not for purposes of limitation, the scope of the invention being set forth in the appended claims. Y

We claim: Y

1. In a device of the class described comprising a rack, a lap pin bearing head having one end thereof engagingV the rack, means engaging the central portion of the head and being slidably mounted in the rack, and a shearing pin in the rack penetrating said means engaging the central portion of the head.

.2. In a device -of the -class described comprising 'a rack, a lap `pin bearing lhead z-having one end thereof slidably engaging the rack, a pair lap pin bearing, means engaging the central porfjlionnflthe head and being slidably mounted in the rack and a .shearing pin in the rack peneftrating said lmeans Aengaging the central portion ofthehead.

3. Ina devlicenf the class described comprising a rack, a lap pin bearing head having one `end thereof slidably engaging the rack, means engaging .the central portion of the head and being slidably mounted in the rack, a shearing 25 pinin :the 'rack-penetrating `isaid means f'engaging .the :central :portion V`of the fhead, the .slidable connection between the headeanid' 'Lthe ,rack having a :relatively wide clearance* to permit lateral rocking of the -hea-don the rack. i0

14. :In :a device iof 'the-class. describedcomprising 'a rack, a lap ipin `bearing head `having ione end Athereof :slidably engaging the rack', a pair .of `-rollers :mounted fin 4the ihead for `engaging :the lap pin bearingnneans engagingzthe central por- 55 .tionof'fthehead and being Vslidably mountedin `the rack, :afshearing pin in thezrack penetrating 'said means engaging the central portion ofthe head, the `slidable connection fbetween the head and the rack` having a relatively :wide ,clearance 0' to permit lateral vrocking of lthe head on the rack.

v5. 'In va -device of the .class described compris- Ying -a rack, -alap pin bearing head slidably and .pivotallyY-mounted on'the rack and 'having -lat- 5^ xeral rocking :movement withrelation to vthe rack `rto follow the lap pin, :ashearing pin inthe :rack :normally prevent-ing sliding movement of. the .head above`a ggivenpoint on the-rack, Vand -means for limiting upward movement o1' the v.head :after 56 kthe :shearing pin breaks.

6. yA calendar Vrack havingraV lap pin bearing .head vslidably mounted thereon'and having lat- =eral :rocking movement with :relation tol-the rack to vvfollow the lap pin, a shearing -pin to prevent 55 sliding movement of the head on the rack -be- ,-yond a `given point 4on the rack,and means forV :limiting upward movement V'of the head on the rack when undue lpressurezon the head -breaks the shearing pin.

"1. 'In a `device `of the `class fdescribed comprising a rack, a lap pin bearing head slidably mounted on the rack'and having lateral rocking vmotion with relation to the rack vto allow the head to follow the lap pin, a shearing pin in 05 the .rack normally preventing sliding movement .of the head above a given point on the rack, a pair of rollers mounted inthe head for engaging the lap pin bearing, and means for limiting vupward movement of thehead on the rack when .the shearing pin breaks.

tion with relation vto the rack, a pin in the rack engaging the top of the head, a shearing pin holding vthe pin in the head for preventing sliding movement of the head on the rack beyond a given point on the rack, a pair of rollers mounted in the head for engaging the lap pin bearing, means for limiting upward movement of the head of the rack when undue pressure on the head breaks the shearing pin.

9. A calendar rack having a head slidably 10 mounted thereon and having lateral rocking motion with relation to the rack, a pin in the rack engaging the top of the head, a shearing pin holding the pin in the head for preventing sliding movement of the head on the rack beyond a given point on the rack, means for limiting upward movement of the head on the rack when undue pressure on the head breaks the shearing pm.

ROBERT J. HIGGINBOTHAM.

CARL M. MARTIN. 

